DE19911839A1 - Device for displaying characters and symbols has intermediate surfaces between light bodies and light body surfaces that absorb externally incident light and/or diffusely reflect over large angle - Google Patents

Device for displaying characters and symbols has intermediate surfaces between light bodies and light body surfaces that absorb externally incident light and/or diffusely reflect over large angle

Info

Publication number
DE19911839A1
DE19911839A1 DE1999111839 DE19911839A DE19911839A1 DE 19911839 A1 DE19911839 A1 DE 19911839A1 DE 1999111839 DE1999111839 DE 1999111839 DE 19911839 A DE19911839 A DE 19911839A DE 19911839 A1 DE19911839 A1 DE 19911839A1
Authority
DE
Germany
Prior art keywords
light
bodies
symbols
luminous
additives
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE1999111839
Other languages
German (de)
Inventor
Fred Wingerter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LEUROCOM ELECTRONIC DISPLAYS GMBH, 71364 WINNENDEN
Original Assignee
LEUROCOM VISUELLE INFORMATIONS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LEUROCOM VISUELLE INFORMATIONS filed Critical LEUROCOM VISUELLE INFORMATIONS
Priority to DE1999111839 priority Critical patent/DE19911839A1/en
Priority to DE1999114084 priority patent/DE19914084A1/en
Publication of DE19911839A1 publication Critical patent/DE19911839A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Landscapes

  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

The device has a number of light bodies (1) arranged adjacent to each other on a panel and able to be stimulated to radiate light in a forward lobe. The intermediate surfaces between the light bodies and the surfaces of the light bodies are designed so that externally incident light is absorbed to a great extent and/or diffusely reflected with a large scattering angle. An Independent claim is also included for a method of manufacturing a device for indicating characters and symbols.

Description

Die Erfindung betrifft eine Vorrichtung zur Anzeige von Zeichen und Symbolen mit Leuchtkörpern gern. Oberbegriff des Anspruches 1 bzw. ein Verfahren zur Herstellung derselben gern. Anspruch 8.The invention relates to a device for displaying signs and symbols with luminous elements. The preamble of claim 1 and a method for producing the same. Claim 8.

Solche Vorrichtungen sind bekannt, beispielsweise durch die deutsche Offenlegungsschrift 35 13 607 A1.Devices of this type are known, for example from German Offenlegungsschrift 35 13 607 A1.

Diese Anzeigevorrichtungen, welche z. B. Glühlampen oder Leuchtdioden als Licht- oder Leuchtkörper beinhalten, werden als Informationstableaus z. B. für Verkehrshinweise, Fahrpläne, Anzeigetafeln in Stadien und dergleichen mehr verwendet.These display devices, which, for. B. incandescent lamps or light emitting diodes as light or luminous bodies include, are as information boards z. B. for traffic information, timetables, scoreboards in stadiums and the like used more.

In der Regel werden, insbesondere bei Verwendung von Leuchtdioden, die Leuchtkörper in eine Vergußmasse eingebettet, die das Eindringen von Feuchte und Wasser verhindern soll, aber auch die Statik des Tableaus erhöht und die Lichtkörper fixiert.As a rule, particularly when using light-emitting diodes, the luminous elements are encapsulated in a casting compound embedded, which should prevent the ingress of moisture and water, but also the statics of the panel increased and the light bodies fixed.

Nachteilig ist bei den Tableaus nach dem Stande der Technik, daß der Kontrast und damit die Lesbarkeit, insbesondere bei hellen Umgebungsbedingungen und in erhöhtem Maße bei grellem Sonnenlichteinfall stark leidet. Es ist zwar möglich, die Helligkeit der Leuchtelemente zu steigern, indem man sie dann bis zur Leistungsgrenze hochfährt, was jedoch sehr teuer ist bzgl. Energie und damit Betriebskosten und auch einen höheren Tribut durch den entsprechenden Ausbau der Stromversorgungskapazität verlangt. Diese Art der Kontraststeigerung stößt also an Grenzen und würde auch die Lebensdauer der Lichtkörper stark vermindern.A disadvantage of the prior art panels is that the contrast and thus the legibility, especially strong in bright ambient conditions and to a greater extent in bright sunlight suffers. Although it is possible to increase the brightness of the lighting elements by then up to Power limit rises, which is however very expensive in terms of energy and thus operating costs and also one higher toll due to the corresponding expansion of the power supply capacity. That kind of The increase in contrast is therefore limited and would also significantly reduce the lifespan of the light bodies.

Aufgabe der vorliegenden Erfindung war es deshalb, den Kontrast mit anderen Mitteln zu vergrößern, derart daß die Lichtkörper nicht mit, einer erhöhten Helligkeit erregt werden müssen, die an der oberen Grenze ihrer maximalen Leistung liegt und damit ihre Lebensdauer verkürzt.The object of the present invention was therefore to increase the contrast by other means such that the light bodies do not have to be excited with increased brightness, which is at the upper limit of their maximum performance and thus shortens their lifespan.

Die Aufgabe wurde mit den kennzeichnenden Merkmalen des Anspruches 1 bzw. 7 gelöst. Vorteilhafte Ausgestaltungen ergeben sich durch die Unteransprüche.The object was achieved with the characterizing features of claims 1 and 7, respectively. Advantageous refinements result from the subclaims.

Die Vorteile der vorliegenden erfindungsgemäßen Anzeigevorrichtung liegen darin, daß eine Kontrasterhöhung und damit eine Lesbarkeitsverbesserung erzielt wird, ohne daß eine erhöhte Stromansteuerung an die Leistungsgrenze der Leuchtkörper benötigt wird. The advantages of the present display device according to the invention are that an increase in contrast and thus a readability improvement is achieved without an increased current control to the Performance limit of the filament is needed.  

Die Erfindung wird nun anhand der Figur näher erläutert.The invention will now be explained in more detail with reference to the figure.

Die Figur zeigt einen Querschnitt durch einen Teil der erfindungsgemäßen Anzeigevorrichtung. Die Lichtkörper 1 sind z. B. rasterförmig nebeneinander angeordnet und in eine Vergußmasse 2 eingebettet. Diese Vergußmasse kann nur oberflächlich die Lichtkörper umhüllen, so daß in der Tiefe ein Hohlraum 3 entsteht, oder aber es kann auch die Vergußmasse 2a als Vollverguß eingebracht sein, so daß die Träger 4 der Lichtkörper zusätzlich mit eingebettet sind.The figure shows a cross section through part of the display device according to the invention. The light body 1 are z. B. arranged in a grid next to each other and embedded in a sealing compound 2 . This potting compound can only superficially envelop the light body, so that a cavity 3 is formed in the depth, or the potting compound 2 a can also be introduced as a full potting compound, so that the carrier 4 of the light body are additionally embedded.

Zur Kontrasterhöhung ist nun die Oberfläche der Vergußmasse 2 mit einer zusätzlichen Schicht 2b versehen, welche extern einfallendes Licht absorbiert und/oder in höchstem Maße diffus streut. Zu dem extern einfallendem Licht zählt in diesem Fall aber auch das Licht der angeregten Lichtkörper. Erfindungsgemäß sind die Oberflächenschicht 2b der Zwischenflächen Vergußmasse 2 von dunkler bis tiefschwarzer Farbe so ausgestaltet, daß sie extern einfallendes Licht absorbieren, d. h. reflektionsarm sind und die Restreflektion sehr breit streuen, d. h. diffus erfolgen läßt. In diesem Fall ist die Oberfläche als sehr matt einzustufen.To increase the contrast, the surface of the casting compound 2 is now provided with an additional layer 2 b, which absorbs externally incident light and / or diffuses to the highest degree. In this case, the externally incident light also includes the light from the excited light bodies. According to the invention, the surface layer 2 are b of the clearance areas of dark potting compound 2 to deep black color configured to absorb external incident light, ie, are very wide-reflection and scatter the residual reflection, can be effected that is diffusely. In this case, the surface can be classified as very matt.

Bei sehr dichter Packung der Lichtkörper 1 wirkt die Oberfläche derselben ebenfalls kontrastvermindernd, wenn sie nicht mit einer zusätzlichen Oberfläche 1a versehen ist, die ebenfalls extern einfallendes Licht absorbiert bzw. Reflektionsreste sehr stark diffus verteilt.In the case of very dense packing of the light bodies 1, the surface of the same also has a contrast-reducing effect if it is not provided with an additional surface 1 a, which also absorbs externally incident light or very strongly diffusely distributes reflection residues.

Erfindungsgemäß wird zur Herstellung der vorliegenden Anzeigevorrichtung während des Abbindevorganges der eingebrachten Vergußmasse dunkle bis tiefschwarze, matte Zusatzstoffe in kleinster Körnung auf die Oberfläche aufgebracht, welche Zusatzstoffe sich mit der im Abbindeprozeß befindlichen Vergußmasse verkleben. Nach dem Abbinden wird das überschüssige Material entfernt. Als Zusatzstoffe kommen in Frage folgende Materialien wie dunkle mineralische Stoffe oder Kunststoffe, aber auch beispielsweise organische Abkömmlinge, wie Ruß oder dergleichen.According to the invention for the manufacture of the present display device during the setting process Potting compound dark to deep black, matt additives in the smallest grain size on the surface applied, which additives stick to the casting compound in the setting process. To the excess material is removed after setting. The following materials are suitable as additives such as dark mineral substances or plastics, but also, for example, organic derivatives, such as soot or similar.

Claims (11)

1. Vorrichtung zur Anzeige von Zeichen und Symbolen mittels einer Vielzahl von Leuchtkörpern, die nebeneinander auf einem Tableau angeordnet sind und zu einer in frontaler Richtungskeule erfolgenden Lichtabstrahlung erregbar sind, dadurch gekennzeichnet, daß die Zwischenflächen zwischen den Leuchtkörpern, als auch die Oberflächen der Leuchtkörper so ausgestattet sind, daß extern einfallendes Licht in hohem Maße absorbiert wird und/oder in großem Streuwinkel diffus reflektiert wird.1. Device for displaying signs and symbols by means of a plurality of luminous elements, which are arranged side by side on a tableau and can be excited to emit light in a frontal directional lobe, characterized in that the interfaces between the luminous elements, and the surfaces of the luminous elements so are equipped that externally incident light is absorbed to a high degree and / or is diffusely reflected in a large scattering angle. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zwischenflächen zwischen den Leuchtkörpern eine dunkle Färbung und eine niedrige Reflektion aufweisen.2. Device according to claim 1, characterized in that the interfaces between the Luminous bodies have a dark color and low reflection. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Zwischenflächen zwischen den Leuchtkörpern matt ausgestaltet sind.3. Apparatus according to claim 1 or 2, characterized in that the interfaces between the Luminous bodies are designed matt. 4. Vorrichtung nach Anspruch 2 oder 3, wobei die Zwischenflächen zwischen den Leuchtkörpern durch eine Vergußmasse gebildet wird, dadurch gekennzeichnet, daß auf der Vergußmasse eine zusätzliche reflektionsarme und/oder matte Schicht angeordnet ist.4. Apparatus according to claim 2 or 3, wherein the interfaces between the filaments by a Potting compound is formed, characterized in that an additional on the potting compound low reflection and / or matt layer is arranged. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die zusätzliche Schicht dunkel bis schwarz ausgestaltet ist.5. The device according to claim 4, characterized in that the additional layer dark to black is designed. 6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Leuchtkörper lichtemittierende Dioden (LED) sind.6. Device according to one of the preceding claims, characterized in that the luminous element are light emitting diodes (LED). 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Oberflächen der Leuchtkörper mit einer dünnen, in hohem Maße nicht reflektierenden Schicht versehen sind.7. Device according to one of the preceding claims, characterized in that the surfaces of the Luminous bodies are provided with a thin, highly non-reflective layer. 8. Verfahren zur Herstellung einer Vorrichtung zur Anzeige von Zeichen und Symbolen mittels einer Vielzahl von Leuchtkörpern, die nebeneinander auf einem Tableau angeordnet und zu einer in frontalen Richtung erfolgenden Lichtabstrahlung erregbar sind, wobei die Zwischenräume zwischen den Leuchtkörpern aus einer Vergußmasse gebildet werden, dadurch gekennzeichnet, daß nach dem Einbringen der Vergußmasse vor deren Abbinden matte Zusatzstoffe eingestreut werden.8. A method of manufacturing a device for displaying characters and symbols by a variety of lighting fixtures arranged side by side on a tableau and forming a frontal direction the light radiation that occurs can be excited, the spaces between the luminous elements being made a potting compound are formed, characterized in that after the potting compound has been introduced matt additives are sprinkled in before setting. 9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die Zusatzstoffe dunkel bis tiefschwarz sind.9. The method according to claim 8, characterized in that the additives are dark to deep black. 10. Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß die Zusatzstoffe unregelmäßig in ihrer Oberfläche sind.10. The method according to claim 8 or 9, characterized in that the additives are irregular in their Surface are. 11. Verfahren nach Anspruch 8, 9 oder 10, dadurch gekennzeichnet, daß die Zusatzstoffe reflektionsarm sind.11. The method according to claim 8, 9 or 10, characterized in that the additives are low-reflection.
DE1999111839 1999-03-17 1999-03-17 Device for displaying characters and symbols has intermediate surfaces between light bodies and light body surfaces that absorb externally incident light and/or diffusely reflect over large angle Withdrawn DE19911839A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1999111839 DE19911839A1 (en) 1999-03-17 1999-03-17 Device for displaying characters and symbols has intermediate surfaces between light bodies and light body surfaces that absorb externally incident light and/or diffusely reflect over large angle
DE1999114084 DE19914084A1 (en) 1999-03-17 1999-03-27 Arrangement for displaying characters and symbols e.g. for use as advertising banner, has light bodies arranged adjacent to each other on plate and that can be stimulated to produce light output in forward directional lobe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999111839 DE19911839A1 (en) 1999-03-17 1999-03-17 Device for displaying characters and symbols has intermediate surfaces between light bodies and light body surfaces that absorb externally incident light and/or diffusely reflect over large angle

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DE19911839A1 true DE19911839A1 (en) 2000-10-19

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DE1999111839 Withdrawn DE19911839A1 (en) 1999-03-17 1999-03-17 Device for displaying characters and symbols has intermediate surfaces between light bodies and light body surfaces that absorb externally incident light and/or diffusely reflect over large angle

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2003635A2 (en) * 2007-06-13 2008-12-17 Leurocom electronic displays GmbH Illuminated display and method for producing an illuminated display
WO2016173096A1 (en) * 2015-04-27 2016-11-03 深圳市国华光电科技有限公司 Device combining led display and reflective display

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837596A1 (en) * 1978-08-29 1980-04-10 Bosch Gmbh Robert Row of light emitting diodes for visual indicators - esp. for displaying frequency of motor car radios, where each chip is covered by cast resin light dispersal element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837596A1 (en) * 1978-08-29 1980-04-10 Bosch Gmbh Robert Row of light emitting diodes for visual indicators - esp. for displaying frequency of motor car radios, where each chip is covered by cast resin light dispersal element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2003635A2 (en) * 2007-06-13 2008-12-17 Leurocom electronic displays GmbH Illuminated display and method for producing an illuminated display
EP2003635A3 (en) * 2007-06-13 2009-09-02 Leurocom electronic displays GmbH Illuminated display and method for producing an illuminated display
WO2016173096A1 (en) * 2015-04-27 2016-11-03 深圳市国华光电科技有限公司 Device combining led display and reflective display

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Owner name: LEUROCOM ELECTRONIC DISPLAYS GMBH, 71364 WINNENDEN